>How many billions would a major bank loose in a lawsuit, if they did the sensible thing and refused to deal with 3% of the population?
Zero. Because FINCEN/KYC[0] laws in the US mandate identification for all customers.
Which means that at least 3% of the populations is "unbanked"[1]:
Some reasons a person might not have a bank account
include:
Lack of access via a nearby bank branch or mobile phone
Minimum balance fees
Distrust of the banking system, typically due to lack of transparency
regarding fees and deposit timing[1]
No access to government-issued ID, which is required to open a bank account
To avoid delinquent debts, such as creditors seizing the account in
judgements, or the government collecting back taxes or child support
Zero. Because FINCEN/KYC[0] laws in the US mandate identification for all customers.
Which means that at least 3% of the populations is "unbanked"[1]:
[0] https://www.investopedia.com/terms/k/knowyourclient.asp[1] https://en.wikipedia.org/wiki/Unbanked
Edit: Fixed subject/verb agreement (laws/mandate)/fixed quote formatting.